It seems very obvious at this point that Oda wants Zoro to fight King.
1. Luffy literally told Zoro to leave Kaido to him, and Zoro agreed. It would be extremely out of character for Zoro to not trust Luffy when Luffy promises that he can handle Kaido without Zoro’s help. Not to mention there would be no point in removing Zoro from the rooftop just to bring him back there.
2. Zoro pretty much always fights the 2nd strongest of the organization present in the arc. Zoro fought Cabaji, Zoro fought Hachi, Zoro fought Mr. 1, Zoro fought Ohm, Zoro fought Kaku, and Zoro fought Ryuma (Oars was technically the strongest zombie, but he was a group fight, so Zoro still fought the strongest opponent when it comes to 1v1 fights), and Zoro fought Pica. The only exception is PH, which was just a side arc and not one that was supposed to be fight-centric. There was really only one serious fight in PH anyways.
3. All of the other core Beast Pirates are being taken out by SHs (and before anyone brings up Jack, I believe that Inu being the one to beat Jack is nearly impossible for a plethora of reasons that I won’t mention right now because going into all the reasons why it would make no sense would make this post way too long).
4. Marco made it clear that he believes it’s the new generation’s time to shine. It would be odd for Oda to write this detail in, only to have Marco be the one to beat the 2nd most important member of the Beast Pirates
1. Luffy literally told Zoro to leave Kaido to him, and Zoro agreed. It would be extremely out of character for Zoro to not trust Luffy when Luffy promises that he can handle Kaido without Zoro’s help. Not to mention there would be no point in removing Zoro from the rooftop just to bring him back there.
2. Zoro pretty much always fights the 2nd strongest of the organization present in the arc. Zoro fought Cabaji, Zoro fought Hachi, Zoro fought Mr. 1, Zoro fought Ohm, Zoro fought Kaku, and Zoro fought Ryuma (Oars was technically the strongest zombie, but he was a group fight, so Zoro still fought the strongest opponent when it comes to 1v1 fights), and Zoro fought Pica. The only exception is PH, which was just a side arc and not one that was supposed to be fight-centric. There was really only one serious fight in PH anyways.
3. All of the other core Beast Pirates are being taken out by SHs (and before anyone brings up Jack, I believe that Inu being the one to beat Jack is nearly impossible for a plethora of reasons that I won’t mention right now because going into all the reasons why it would make no sense would make this post way too long).
4. Marco made it clear that he believes it’s the new generation’s time to shine. It would be odd for Oda to write this detail in, only to have Marco be the one to beat the 2nd most important member of the Beast Pirates